Picture frame layout jig



l mvEN'roRy Jose/oh I. luhm A'rroRNEYs- Dea-17, 196s United States Patent O 3,416,234 PICTURE FRAME LAYOUT JIG Joseph I. Bluhm, 12 Roberta Road, Sharon,lMass. 02067 Filed Dec. 5, 1966, Ser. No. 599,688 3 Claims. (Cl. 33-174) The invention described herein may be manufactured and used by or for the Government, for governmental purposes, without the payment to me of any royalty thereon.

This invention relates to a picture frame layout jig and more particularly to a jig having 45 rulings, suitable stops and a slide to facilitate the markings of picture frame stock for subsequent cutting by a conventional table saw to a given glass size with the minimum of transfer of the markings and with a high degree of precision not heretofore easily attainable by other means.

Present methods of laying out picture frame stock for glass size are awkward and time consuming, usually due to transferring the scribed marking from the side of the stock to its upper edge, which caused inaccuracy at best and caused a poor fit for the glass pane to be inserted in the mitered longitudinal groove therein.

Also, the gaging of the size had to be repeated for each piece of stock to be used. Since four ypieces of stock are used to construct a picture frame, the inaccurate marking was multipled four times in the fabrication of a single frame.

Thus it is apparent that the glass pane was either too loosely or too tightly fitted within the frame by the aforesaid methods.

The present invention has for its object a layout jig to facilitate the marking of picture frame stock for subsequent cutting.

Another object is toV provide a marking jig for laying out picture frame stock that will provide a high degree of precision.

It is a further object to provide a marking jig that will enable a mark to be placed on the inner edge of the stock thereby eliminating the otherwise necessary transfer of the mark from its side to its inner edge.

A still further object is to provide a -picture frame layout jig of simple construction that may be used to mark either end of a picture frame stock.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawing, in which:

FIG. 1 is a side elevation of the picture frame layout jig of the invention;

FIG. 2 is a similar view of a piece of frame stock and showing, in broken lines, the cuts to be made before and after using the marking jig;

FIG. 3 is a side elevation and showing the jig applied to the stock together with the marker slide;

FIG. 4 is a cross section taken along line 4--4 of FIG. 3;

FIG. 5 is a cross section taken along line 5--5 of FIG. 1;

FIG. 6 is a top view of the piece of stock after the first cut and, as marked, and,

FIG. 7 is a perspective view of the marker slide.

Referring in detail to the drawing wherein the marking jig is generally indicated by reference numeral 1.

Jig 1 comprises an elongated, substantially rectangular member and has a cutout portion along its lower portion which defines a lower edge 2 which is parallel to the upper edge 3 and a forty-five degree beveled shoulder 4, as seen in FIG. 1.

Rulings 5 are provided on one or both sides of the jig, and are inclined at a forty-five degree angle which is op- 3,416,234 Patented Dec. 17, 1968 ACe posite to the inclination of the beveled shoulder `4, as shown.

A piece of picture frame stock 6 is shown in FIG. 2 and is the usual type stock from which picture frames are cut into lengths for assembly. The stock 6 is usually provided with a mitered longitudinal groove 7 in which the backing, picture and glass pane are received.

A slide, indicated generally by 8, is provided and, as shown in FIG. 7, is a separate block having parallel upper and lower edges. Its end faces are beveled at their upper portions forty-five degrees as at 9 and 10. One lower-'ipottion is undercut as at 11 which provides a vertical shoulder 12, and the other end is provided with an extension 13 having a vertical face 14. v

An anti-skid member is provided and maybe a needle 15 driven partially into beveled shoulder 4, so'that a portion thereof projects beyond as shown, the purpose of which is to be described.

In FIG. 2, there is shown a piece of picture frame stock 6 and the cuts to be made are shown in broken lines. A first forty-five degree cut is made by a conventional table saw, or miter box, not shown. If thelirst cut is made on the left side, it will be on line indicated by A-B; if right, on line C-D.

After the first cut is made in stock 6, the jig 1 is placed over stock 6 as shown in FIG. 3 and the anti-skid 15 is pushed into the end of stock 6 to prevent movement of the jig.

Lower edge 2 of the jig 1 rests on the floor of groove 7 in the stock 6 while the beveled shoulder 4 will abut the left edge of stock 6 as shown.

Assuming that the first cut is made along line A-B, the jig 1 will be used as shown in FIG. 3 (left to right).

Slide 8 is placed on the upper edge of stock 6 as shown in FIGURES 3 and 4 and held against the side of jig 1 and moved to the right to the point at which the subsequent cut is to be made. Beveled upper ends -9 and 10 will coincide with rulings 5 when slide 8 is moved.

Then the upper edge of stock is marked (see FIG. 6) at S and the stock is again cut las indicated by line C-D in FIG. 2.

lf the jig 1 is used from right to left, the first cut is made along line C-D (FIG. 2) in stock y6 and the jig 1 turned around and the slide 8 moved to the other side and the upper edge of stock 6 is marked as at T.

While stop 8 has been shown to be a separate member, it could be slidably mounted on the jig 1 by suitable means, not shown, so that it could not be mislaid.

It is apparent that the lower edge 2 and the shoulder 4 of jig 1, both being planar surfaces, will make ideal work stops when placed over the stock 6 and, together with the anti-skid 15, the jig 1 is firmly mounted on the work piece to insure an accurate marking.

After the work piece `6 has been cut to its proper length, line E-F (FIG. 2) will be the width of the glass (not shown) to be 4fitted in groove 7.

Thus, several pieces of stock can be quickly marked by the jig for subsequent cuttings.

Although the jig of this invention has been shown and described for use with picture frame stock, it can be used to measure other types of stock for subsequent cuttin-g, the angle of the shoulder 4 and the slide 8 can be modified to measure for cuts of a different angle if desired.

What is claimed is:

1. A picture frame layout jig for use with picture framing stock having an inner edge which defines the viewable portion of the picture when the stock is made up into a frame, said inner edge having a groove the bottom of which is an inside edge and receives the object to be framed, the jig comprising in combination, an elongated, substantially rectangular member for placement over the inside ed-ge of a length of picture rame stock having a first forty-five degree eut made thereon to measure said stock for a subsequent length cut, said rectangular member having an under-cut along its lower portion to deiine a lower edge having a face and a shoulder, the face of said lower edge and the shoulder defining a one hundred thirty-tive degree angle, the rectangular member having forty-five degree rulings along an edge parallel to the under-cut edge which rulings are perpendicular to said shoulder, said face of said lower edge being straight to about the inside edge of said stock, a slide having an edge which is adapted to rest on the inner edge of said stock, said slide having another edge which is adapted to about the side of said elongated member, and having a third edge which cooperates with said rulings when said slide is in an operative position for measuring a length of said stock for a subsequent forty-five degree cut at an angle opposite to said rst forty-live degree cut and a non-skid member carried by said forty-live degree shoulder for steadying said jig while marking said stock.

2. A device as set forth in claim 1 wherein said slide comprises a block having parallel upper and lower edges,

References Cited UNITED STATES PATENTS 2,537,473 1/1951 R. W. McCusker 33-158 838,355 12/ 1906 J. M. Realing 3.3-95

8/1856 L. Crofoot 33--90 LEONARD FORMAN, Primary Examiner.

S. STEPHAN, Assistant Examiner.

U.S. C1. X.R. 33-75, 107 

1. A PICTURE FRAME LAYOUT JIG FOR USE WITH PICTURE FRAMING STOCK HAVING AN INNER EDGE WHICH DEFINES THE VIEWABLE PORTION OF THE PICTURE WHEN THE STOCK IS MADE UP INTO A FRAME, SAID INNER EDGE HAVING A GROOVE THE BOTTOM OF WHICH IS AN INSIDE EDGE AND RECEIVES THE OBJECT TO BE FRAMED, THE JIG COMPRISING IN COMBINATION, AN ELONGATED, SUBSTANTIALLY RECTANGULAR MEMBER FOR PLACEMENT OVER THE INSIDE EDGE OF A LENGTH OF PICTURE FRAME STOCK HAVING A FIRST FORTY-FIVE DEGREE CUT MADE THEREON TO MEASURE SAID STOCK FOR A SUBSEQUENT LENGTH CUT, SAID RECTANGULAR MEMBER HAVING AN UNDER-CUT ALONG ITS LOWER PORTION TO DEFINE A LOWER EDGE HAVING A FACE AND A SHOULDER, THE FACE OF SAID LOWER EDGE AND THE SHOULDER DEFINING A ONE HUNDRED THIRTY-FIVE DEGREE ANGLE, THE RECTANGULAR MEMBER HAVING A FORTY-FIVE DEGREE RULINGS ALONG AN EDGE PARALLEL TO THE UNDER-CUT EDGE WHICH RULINGS ARE PERPENDICULAR TO SAID SHOULDER, SAID FACE OF SAID LOWER EDGE BEING STRIAGHT TO ABOUT THE INSIDE EDGE OF SAID STOCK, A SLIDE HAVING AN EDGE WHICH IS ADAPTED TO REST ON THE INNER EDGE OF SAID STOCK, SAID SLIDE HAVING ANOTHER EDGE WHICH IS ADAPTED TO ABOUT THE SIDE OF SAID ELONGATED MEMBER, AND HAVING A THIRD EDGE WHICH COOPERATES WITH SAID RULINGS WHEN SAID SLIDE IN IN AN OPERATIVE POSITION FOR MEASURING A LENGTH OF SAID STOCK FOR A SUBSEQUENT FORTY-FIVE DEGREE CUT AT AN ANGLE OPPOSITE TO SAID FIRST FORTY-FIVE DEGREE CUT AND A NON-SKID MEMBER CARRIED BY SAID FORTY-FIVE DEGREE SHOULDER FOR STEADYING SAID JIG WHILE MAKING SAID STOCK. 